import java.util.Scanner;

public class ZY4 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("请输入一个数：");
        int B = input.nextInt();
        if (B % 7 == 0) {
            System.out.println(B + "是7的倍数");
        } else {
            System.out.println(B + "不是7的倍数");
        }
    }
}
